Missing GetMappedValueCount(int channel) in VolumeDataLayout.h
There is no virtual int GetMappedValueCount(int channel) const = 0;
in VolumeDataLayout.h
to retrieve the number of values to store per trace (when using per trace mapping)
For sure, user can already do that with GetChannelDescriptor(int channel).GetMappedValueCount()
but it seems to be a little inconsistency.